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cervical cancer radiation

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https://www.readbyqxmd.com/read/29145262/management-of-radiation-induced-rectovesical-fistula-in-a-woman-using-ileum-a-case-report-and-review-of-the-literature
#1
Qiqi Mao, Jindan Luo, Jiajie Fang, Hai Jiang
BACKGROUND: Radiation-induced rectovesical fistulas (RVFs) require the most demanding treatment. We presented a rare case of postradiation RVF in a woman repaired with ileum. CASE PRESENTATION: A 49-year-old women was referred to our department for fecaluria and dysuria after radiation for cervical cancer. The voiding cystourethrography demonstrated a large RVF. A segment of ileum was separated into 2 parts for the simultaneous reconstruction of bladder and rectum, which led to a permanently closed fistula...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145247/comparison-of-chemoradiotherapy-with-and-without-brachytherapy-as-adjuvant-therapy-after-radical-surgery-in-early-stage-cervical-cancer-with-poor-prognostic-factors-an-observational-study
#2
Mei-Ling Lan, Xian Yu, He Xiao, Peng Zhou, Nan Hu, Yun Liu, Ge Wang
This study aimed to determine whether the addition of intracavitary brachytherapy (ICBT) to chemoradiotherapy (CRT) improves outcome in patients with cervical cancer and poor prognostic factors. Patients with stage IB to IIA cervical cancer who had undergone radical hysterectomy and pelvic lymphadenectomy between August 2008 and December 2014 were retrospectively registered in this study. All patients received external beam radiation therapy (EBRT) + chemotherapy, and some patients additionally received ICBT...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29143344/down-regulation-of-p16-and-mgmt-promotes-the-anti-proliferative-and-pro-apoptotic-effects-of-5-aza-dc-and-radiation-on-cervical-cancer-cells
#3
Guan-di Chen, De-Ying Qian, Zhi-Gang Li, Ge-Ying Fan, Ke-Li You, Yi-Long Wu
Cervical cancer is one of the most common malignancies of the female reproductive system. Therefore, it is critical to investigate the molecular mechanisms involved in the development and progression of cervical cancer. In this study, we stimulated cervical cancer cells with 5-aza-2'-deoxycytidine (5-Aza-dC) and found that this treatment inhibited cell proliferation and induced apoptosis; additionally, methylation of p16 and O-6-methylguanine-DNA methyltransferase (MGMT) was reversed, although their expression was suppressed...
November 15, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29113342/overexpression-of-microrna-132-enhances-the-radiosensitivity-of-cervical-cancer-cells-by-down-regulating-bmi-1
#4
Gui-Feng Liu, Shu-Hua Zhang, Xue-Feng Li, Li-Yan Cao, Zhan-Zhao Fu, Shao-Nan Yu
We examined the effects of microRNA-132 (miR-132) on Bmi-1 expression and radiosensitivity in HeLa, SiHa, and C33A cervical cancer (CC) cells and 104 CC patients. MiR-132 expression was decreased and Bmi-1 expression was increased in tumor tissues compared to adjacent normal tissues and in radiotherapy-resistant patients compared to radiotherapy-sensitive patients. MiR-132 expression and Bmi-1 mRNA expression were also negatively correlated in tumor tissues. HeLa, SiHa, and C33A cells were divided into blank, miR-132 negative control (NC), miR-132 inhibitor, miR-132 mimics, siBmi-1, and miR-132 inhibitor + siBmi-1 groups, after which expression of miR-132 and Bmi-1, and the interaction between them and cell survival, proliferation, and apoptosis were examined...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29112685/serum-squamous-cell-carcinoma-antigen-as-an-early-indicator-of-response-during-therapy-of-cervical-cancer
#5
Stephanie Markovina, Songyan Wang, Lauren E Henke, Cliff J Luke, Stephen C Pak, Todd DeWees, John D Pfeifer, Julie K Schwarz, Weijun Liu, Shuai Chen, David Mutch, Xiaowei Wang, Matthew A Powell, Barry A Siegel, Farrokh Dehdashti, Gary A Silverman, Perry W Grigsby
BACKGROUND: Pretreatment serum squamous cell carcinoma antigen (SCCA) is a prognostic biomarker in women with cervical cancer. SCCA has not been evaluated as an early indicator of response to chemoradiation therapy (CRT). The molecular role of the two SCCA isoforms, SCCA1 (SERPINB3) and SCCA2 (SERPINB4), in cervical cancer is unknown. We hypothesised that changes in serum SCCA during definitive CRT predicts treatment response, and that SCCA1 mediates radiation resistance. METHODS: Patients treated with definitive CRT for cervical squamous carcinoma with serum SCCA measured were included...
November 7, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29110878/tumour-size-volume-and-marker-expression-during-radiation-therapy-can-predict-survival-of-cervical-cancer-patients-a-multi-institutional-retrospective-analysis-of-krog-16-01
#6
Jong Hoon Lee, Sea-Won Lee, Ju Ree Kim, Yeon Sil Kim, Mee Sun Yoon, Songmi Jeong, Jin Hee Kim, Ja Young Lee, Keun Yong Eom, Bae Kwon Jeong, Seok Ho Lee
OBJECTIVE: The aim of this multi-institutional study was to determine the prognostic impact of tumour parameters, such as tumour size (TS), tumour volume (TV), and marker expression, on survival during radiation therapy (RT) for cervical cancer patients. METHODS: A total of 231 patients with histologically confirmed cervical cancer, classified as Federation of Gynecology and Obstetrics (FIGO) Ib2-IVa, were enrolled in this study. Pre- and mid-RT pelvic magnetic resonance imaging (MRI) and squamous cell carcinoma antigen (SCC-ag) analysis were performed twice, during RT and just before brachytherapy...
October 27, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29109451/sim2l-attenuates-resistance-to-hypoxia-and-tumor-growth-by-transcriptional-suppression-of-hif1a-in-uterine-cervical-squamous-cell-carcinoma
#7
Kanako Nakamura, Masayuki Komatsu, Fumiko Chiwaki, Takashi Takeda, Yusuke Kobayashi, Kouji Banno, Daisuke Aoki, Teruhiko Yoshida, Hiroki Sasaki
Despite chemoradiotherapy being one of the most important modalities in advanced cervical cancer, there is a lack of both usable biomarkers to predict treatment outcome and of knowledge about the mechanism of refractoriness to the therapy. Here we identified a transcriptional factor Single-minded homolog 2 (SIM2) as an independent predictive biomarker for uterine cervical squamous cell carcinoma (CvSCC). The retrospective study showed that high expression level of SIM2 was correlated to good survival in CvSCC patients...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29104487/ier5-is-involved-in-dna-double-strand-breaks-repair-in-association-with-papr1-in-hela-cells
#8
Xin-Ping Yu, Yu-Mei Wu, Yang Liu, Ming Tian, Jian-Dong Wang, Ku-Ke Ding, Teng Ma, Ping-Kun Zhou
The immediate early response gene 5 (IER5) is a radiation response gene induced in a dose-independent manner, and has been suggested to be a molecular biomarker for biodosimetry purposes upon radiation exposure. Here, we investigated the function of IER5 in DNA damage response and repair. We found that interference on IER5 expression significantly decreased the efficiency of repair of DNA double-strand breaks induced by ionizing radiations in Hela cells. We found that IER5 participates in the non-homologous end-joining pathway of DNA breaks repair...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29103764/additive-cytotoxic-effects-of-radiation-and-mtor-inhibitors-in-a-cervical-cancer-cell-line
#9
Daniele Xavier Assad, Gabriel Alvares Borges, Samuel Ramalho Avelino, Eliete Neves Silva Guerra
The PI3K/AKT/mTOR signaling pathway is frequently activated in HPV-positive cervical squamous cell cancer (CC). This study investigated the biological effects of mTOR inhibitors associated with radiotherapy in a CC cell line (HeLa). A human keratinocyte cell line (HaCaT) was used as control. Temsirolimus, everolimus, resveratrol, curcumin and epigallocatechin gallate (EGCG) were the mTOR inhibitors assessed. The 50% cell cytotoxicity rate (CC50) for each treatment was determined by MTT cell viability assay...
November 2, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29098039/similarity-in-the-functions-of-hif-1%C3%AE-and-hif-2%C3%AE-proteins-in-cervical-cancer-cells
#10
Lixia Jiang, Shaohua Shi, Qiaofa Shi, Huijuan Zhang, Rong Hu, Meizhen Wang
Hypoxia is a common feature of many solid tumours, including cervical cancer. Aggressive tumour progression is mostly associated with hypoxia. Furthermore, hypoxic conditions in tumours are also associated with resistance to chemotherapy and radiation, and with poor prognosis. Hypoxia inducible factor (HIF)-1, composed of a constitutively expressed β-subunit (HIF-β/ARNT) and one of the three known oxygen-regulated α-subunits, HIF-1α, HIF-2α, or HIF-3α, mediates the tumour cell response to hypoxia. The distinction between the roles of HIF-1α and HIF-2α in tumorigenesis is not clearly delineated...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29095678/safety-and-efficacy-of-pembrolizumab-in-advanced-programmed-death-ligand-1-positive-cervical-cancer-results-from-the-phase-ib-keynote-028-trial
#11
Jean-Sebastien Frenel, Christophe Le Tourneau, Bert O'Neil, Patrick A Ott, Sarina A Piha-Paul, Carlos Gomez-Roca, Emilie M J van Brummelen, Hope S Rugo, Shari Thomas, Sanatan Saraf, Reshma Rangwala, Andrea Varga
Purpose The KEYNOTE-028 trial ( ClinicalTrials.gov identifier: NCT02054806) was designed to assess the safety and efficacy of pembrolizumab in 20 programmed death ligand 1-positive, advanced solid tumor cohorts. Here, we present the results from the cohort of patients with advanced cervical cancer. Methods Patients were treated with pembrolizumab 10 mg/kg every 2 weeks for up to 24 months. Response was assessed every 8 weeks for the first 6 months and every 12 weeks thereafter. The primary end point was overall response rate per Response Evaluation Criteria in Solid Tumors, version 1...
November 2, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29094103/multidisciplinary-gynecologic-oncology-clinic-in-botswana-a-model-for-multidisciplinary-oncology-care-in-low-and-middle-income-settings
#12
Surbhi Grover, Sebathu Philip Chiyapo, Priya Puri, Mohan Narasimhamurthy, Babe Eunice Gaolebale, Neo Tapela, Doreen Ramogola-Masire, Mukendi K A Kayembe, Thabo Moloi, Ponatshego Andrew Gaolebale
Purpose: Cervical cancer is a major cause of mortality in low- and middle-income countries (LMICs) and the most common cancer diagnosed in women in Botswana. Most women present with locally advanced disease, requiring chemotherapy and radiation. Care co-ordination requires input from a multidisciplinary team (MDT) to deliver appropriate, timely treatment. However, there are limited published examples of MDT implementation in LMICs. Methods: In May 2015, a weekly MDT clinic for gynecologic cancer care was initiated at Botswana's national referral facility...
October 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/29089122/outcomes-and-patterns-of-relapse-after-definitive-radiation-therapy-for-oligometastatic-cervical-cancer
#13
Matthew S Ning, Vamsi Ahobila, Anuja Jhingran, Shane R Stecklein, Michael Frumovitz, Kathleen M Schmeler, Patricia J Eifel, Ann H Klopp
PURPOSE: Survival rates for women with metastatic cervical cancer are low, with limited management options. Definitive radiation therapy (RT) for oligometastatic disease has led to prolonged survival in other malignancies, but this approach has yet to be systematically studied for cervical cancer. METHODS AND MATERIALS: We evaluated 38 patients who received definitive RT to oligometastatic sites of cervical cancer at a single institution from 2002 to 2015. Patients presented with synchronous (n=9) or metachronous (n=15) oligometastatic disease to supraclavicular (SCV) nodes, or with recurrent disease in mediastinum (n=10) or lung (n=7)...
October 28, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29079120/evaluation-of-delivery-costs-for-external-beam-radiation-therapy-and-brachytherapy-for-locally-advanced-cervical-cancer-using-time-driven-activity-based-costing
#14
Kristine Bauer-Nilsen, Colin Hill, Daniel M Trifiletti, Bruce Libby, Donna H Lash, Melody Lain, Deborah Christodoulou, Constance Hodge, Timothy N Showalter
PURPOSE: To evaluate the delivery costs, using time-driven activity-based costing, and reimbursement for definitive radiation therapy for locally advanced cervical cancer. METHODS AND MATERIALS: Process maps were created to represent each step of the radiation treatment process and included personnel, equipment, and consumable supplies used to deliver care. Personnel were interviewed to estimate time involved to deliver care. Salary data, equipment purchasing information, and facilities costs were also obtained...
September 14, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29072851/cervical-cancer-treated-with-reduced-volume-intensity-modulated-radiation-therapy-base-on-sedlis-criteria-nccn-vs-rtog
#15
Hua-Chun Luo, Gui-Shan Lin, Shao-Guang Liao, Feng-Mei Wang, Hui-Hua Cheng, Jing Feng, Qin Yin, Qun-Hua Chen, Jin-Feng Zhu, Jian-Feng Xu, Dian Wang, Zhi-Chao Fu
OBJECTIVE: This study aimed to evaluate the clinical efficacy of different target volumes in pelvic radiotherapy in postoperative treatment of cervical cancer based on the Sedlis criteria. METHODS: Patients who admitted to our department for postoperative radiotherapy of cervical cancer from December 2001 to December 2011 and met the Sedlis criteria were retrospectively analyzed. The incidences of acute and late radiation injuries, and overall, disease-free, and tumor-specific survival with reduced-volume pelvic and whole-pelvis radiotherapy were evaluated and compared...
October 26, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29072492/strategies-for-reducing-ovarian-dose-in-volumetric-modulated-arc-therapy-vmat-for-postoperative-uterine-cervical-cancer
#16
Ueda Yoshihiro, Ohira Shingo, Isono Masaru, Miyazaki Masayoshi, Konishi Koji, Kamiura Shoji, Sumida Iori, Ogawa Kazuhiko, Teshima Teruki
OBJECTIVE: To reduce the ovarian dose with volumetric modulated arc therapy (VMAT), an original VMAT was designed with two types of arcs to restrict angles and fields (R-VMAT). METHODS: The subjects were 11 patients who underwent ovarian transposition with clips left by a surgeon. Three methods, intensity-modulated radiotherapy (IMRT), standard VMAT (S-VMAT) and R-VMAT, were optimized for assessment of the ovarian dose with the target coverage kept high. RESULTS: The homogeneity and conformity indexes for the planning target volume (PTV) were similar for the three methods...
November 3, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29062577/metastatic-sarcomatoid-squamous-cell-carcinoma-of-the-cervix-presenting-with-chest-mass
#17
Lilit Karapetyan, Manoj Rai, Om Dawani, Heather S Laird-Fick
BACKGROUND: Sarcomatoid squamous cell carcinoma is a rare and aggressive form of cervical cancer. We report a case of metastatic sarcomatoid squamous cell carcinoma (SSCC) of cervix that presented with an anterior chest wall mass. CASE: A 43-year-old Hispanic female presented with a two-month history of a central chest wall mass. The patient's only past medical history was SSCC of the cervix, stage IIB, diagnosed two years priorly. She underwent neoadjuvant chemoradiation therapy (CRT) with cisplatin followed by radical hysterectomy...
2017: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/29055558/pelvic-fractures-after-definitive-and-postoperative-radiotherapy-for-cervical-cancer-a-retrospective-analysis-of-risk-factors
#18
Kasumi Yamamoto, Shoji Nagao, Kazuhiro Suzuki, Ai Kogiku, Tokihiro Senda, Hiroko Yano, Miho Kitai, Takaya Shiozaki, Kazuko Matsuoka, Satoshi Yamaguchi
OBJECTIVES: This study clarified the incidence of and identified the risk factors for post-radiation pelvic insufficiency fractures (PIFs) in women who received postoperative definitive or adjuvant radiotherapy (RT) for cervical cancer. PATIENTS AND METHODS: The medical records and data of imaging studies, including computed tomography scan and magnetic resonance imaging, of women with cervical cancer who received external-beam RT for the entire pelvic area between January 2003 and December 2012 at our institution were reviewed...
October 18, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29045918/cervical-cancer-cells-hela-response-to-photodynamic-therapy-using-a-zinc-phthalocyanine-photosensitizer
#19
Natasha Hodgkinson, Cherie Ann Kruger, Mpho Mokwena, Heidi Abrahamse
Cervical cancer is the most common gynecological malignancy worldwide, and the leading cause of cancer related deaths among females. Conventional treatment for early cervical cancer is radical hysterectomy. In locally advanced cancer the treatment of choice is concurrent chemo radiation. Although such treatment methods show promise, they do have adverse side effects. To minimize these effects, as well as prevent cancer re-occurrence, new treatment methods are being investigated. Photodynamic therapy (PDT) involves the selective uptake of a photosensitizer (PS) by cancer cells, illumination with light of an appropriate wavelength that triggers a photochemical reaction leading to the generation of reactive oxygen and subsequent tumor regression...
October 4, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29044908/tumor-radiomic-heterogeneity-multiparametric-functional-imaging-to-characterize-variability-and-predict-response-following-cervical-cancer-radiation-therapy
#20
Stephen R Bowen, William T C Yuh, Daniel S Hippe, Wei Wu, Savannah C Partridge, Saba Elias, Guang Jia, Zhibin Huang, George A Sandison, Dennis Nelson, Michael V Knopp, Simon S Lo, Paul E Kinahan, Nina A Mayr
BACKGROUND: Robust approaches to quantify tumor heterogeneity are needed to provide early decision support for precise individualized therapy. PURPOSE: To conduct a technical exploration of longitudinal changes in tumor heterogeneity patterns on dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI), diffusion-weighted imaging (DWI) and FDG positron emission tomography / computed tomography (PET/CT), and their association to radiation therapy (RT) response in cervical cancer...
October 16, 2017: Journal of Magnetic Resonance Imaging: JMRI
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